Berlin 2024 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 31: Poster: Organic Molecules on Inorganic Substrates
O 31.2: Poster
Dienstag, 19. März 2024, 18:00–20:00, Poster C
Electrospray Deposition of Large Ring-Molecules — •Ken Kolar1, Grant Simpson1, Caroline Storey2, David Leigh2, and Leonhard Grill1 — 1Dept. of Physical Chemistry, University of Graz, Austria — 2Dept. of Chemistry, University of Manchester, UK
Study of large molecules on the individual scale is of importance in biological contexts; however, their intact deposition onto a surface poses many challenges due to their large size. In this study, we present the room temperature deposition of large ring-molecules with a mass of 1124 u on an Au(100) surface within a high vacuum environment, using an optimized electrospray deposition (ESD) apparatus. The simple setup consists only of an electrospray stage [1,2] and does not contain any mass separation unit as used in more sophisticated setups [3]. Sample characterization was done by low-temperature scanning tunneling microscopy after sample transfer with a vacuum suitcase between different ultrahigh vacuum machines. The results show the successful deposition of intact molecules with very little surface contamination and thus confirm the potential of this simple technique for studying larger molecules under clean conditions at surfaces [4-6].
[1] https://www.molecularspray.co.uk/, (29.11.2023)
[2] F. Paschke, M. Fonin et. al, Q. M. R., 1:e200002, (2020)
[3] X. Wu, M. Delbianco, K. Anggara et al., Nature 582, 375 (2020)
[4] R. Pawlak, J.G. Vilhena, A Hinaut et al., N. C. 10, 685 (2019)
[5] J. Holec et al., Angew. Chem. Int. Ed. 60, 7752 (2021)
[6] S. Scherb, A. Hinaut, R. Pawlak et al., C. M. 1, 8(2020)
Keywords: Electrospray; Deposition; Large molecules